CN103580894B

CN103580894B - Method, equipment and the system of Operations, Administration and Maintenance OAM configurations

Info

Publication number: CN103580894B
Application number: CN201210268576.7A
Authority: CN
Inventors: 古锐; 董杰; 郑莲淑
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2012-07-31
Filing date: 2012-07-31
Publication date: 2017-09-29
Anticipated expiration: 2032-07-31
Also published as: WO2014019348A1; CN103580894A

Abstract

The embodiment of the present invention provides a kind of method, equipment and the system of OAM configurations.This method includes：Source PE configures source OAM entities, forbids source OAM entities to send OAM message to egress PE；The first LSP Ping request messages for carrying source OAM entity configuration information are sent to egress PE；The first LSP Ping response messages of the carrying egress OAM entity configuration information that egress PE is sent are received, when egress OAM entity configurations information and source OAM entity configuration information matches, the function that source OAM entities send OAM message to egress PE are enabled.The embodiment of the present invention additionally provides source PE, egress PE and OAM configuration system, pass through technical scheme provided in an embodiment of the present invention, the workload that source and egress configure OAM is reduced, and two ends dynamically complete OAM by interaction LSP Ping message and configured, it is to avoid the mistake occurred in manual configuration.

Description

Method, equipment and the system of Operations, Administration and Maintenance OAM configurations

Technical field

The present invention relates to method, equipment and the system of network communication field, more particularly to a kind of OAM configurations.

Background technology

(English full name is Operations, Administration and to perfect Operations, Administration and Maintenance Maintenance, English abbreviation is OAM) function is that the important symbol of carrier class network is extremely important for operator , OAM can reduce the operation complexity and O＆M cost of operator, can strengthen the availability of carrier network, can be with The SLA (Service-Level Agreement, service-level agreement) for helping carrier network checking to be signed with user.

OAM mechanism mainly includes fault management (Fault Management), performance monitoring (Performance ) and three aspects of pretection switch (Protection Switching) Monitoring.Wherein fault management can be divided into failure again Detect (Fault Detection), failure proof (Fault Verification), fault location (Fault ) and fault notification (Fault Notification) this four aspects Localization；And performance monitoring is mainly provided to losing Bag, time delay and the monitoring for shaking these three indexs.

For Internet protocol/multi protocol label exchange, (English full name is Internet Protocol/Multiprotocol Label Switching, English abbreviation is IP/MPLS) and Ethernet (Ethernet) network, mainly have at present more perfect OAM mechanism is mainly Ethernet OAM and connection-oriented packet switching network technology, and (English full name is Transport Profile for MPLS, English abbreviation is MPLS-TP) OAM.The former includes IEEE802.3ah, IEEE802.1ag, ITU-T Y.1731 and some metropolitan area ether forums (English full name is Metro Ethernet Forum, and English abbreviation is MEF) mark Standard, the latter's series of standards defined in IETF is constituted.

VPN (English full name is Virtual Private Network, and English abbreviation is VPN) is operator The virtual proprietary network provided a user by its public network, i.e., be the proprietary network of user in the angle VPN of user.For Public network includes public backbone network and public operator edge device for operator.The VPN member being geographically separated from one another Website by client device (CPE) be connected to corresponding provider edge router (English full name is Provider Edge, English abbreviation is PE), the VPN of client is constituted by the public network of operator.

(English full name is the Virtual Private Network of Layer 3 to Layer3 Virtual Private Network, and English abbreviation is L3VPN), it is a kind of three-layer VPN technology based on MPLS.In L3VPN networks, OAM is configured in the prior art VPN is examined , it is necessary to manual creation source PE and egress PE OAM entities during survey, and source PE and egress PE OAM entities are carried out respectively Parameter configuration, will manually ensure matching somebody with somebody for the configuration parameter of egress PE OAM entities and source PE OAM entities in this process Put parameter unanimously, so not only make it that the workload of OAM configurations is larger, and configuration error easily occur.

The content of the invention

Embodiments of the invention provide a kind of method, equipment and the system of OAM configurations, to solve the PE in L3VPN networkings When device configuration OAM is detected to VPN, configuration work amount is big caused by human configuration and easily asking for configuration error occurs Topic.

One side includes there is provided a kind of method that OAM is configured, methods described：

Source provider edge router PE configures source OAM entities, and forbids the source OAM entities to the place PE is held to send OAM message；

The the first label switched path the Internet packets for carrying the source OAM entity configuration information are sent to the egress PE Survey meter LSP Ping request messages, to cause egress PE places according to the source OAM entity configuration information configurations PE egress OAM entities are held, start the message receive capabilities of the egress OAM entities, the first LSP Ping request messages Also the VPN including Layer3 Virtual Private Network L3VPN is identified, and the VPN is identified needs progress for identifying the egress PE equipment The VPN of OAM detections；

The first LSP Ping response messages that the egress PE is sent are received, the first LSP Ping response messages are carried The egress OAM entity configuration information, when it is determined that the egress OAM entity configurations information is believed with the source OAM entity configurations During breath matching, the function that the source OAM entities send OAM message to the egress PE is enabled.

In the first possible implementation of the first aspect, methods described also includes：

When it is determined that the egress OAM entity configurations information is mismatched with the source OAM entity configurations information, institute is adjusted State source OAM entity configurations information and the egress OAM entity configuration information matches, enable the source OAM entities to described Egress PE sends the function of OAM message.

In the first possible implementation of the first aspect or the first aspect, described first is additionally provided Second of possible implementation of aspect, the first LSP Ping request messages are forwarded of equal value by Virtual Private Network OAM Class stack type, length, content VPNOAM FEC TLV carry the VPN marks, and the VPN OAM FEC TLV include：

Target World Wide ID Target Global ID, destination node ID Target Node ID and target Route Distinguisher Target Route Distinguisher。

The third possible implementation in second of possible implementation of the first aspect, the VPN OAM FEC TLV also include：

Target interface ID Target IF ID, need to carry out the interface of OAM detections for identifying the egress PE：

Target ip address information, needs to carry out OAM detection routes for identifying the egress PE.

In any one foregoing possible implementation of the first aspect or the first aspect, institute is additionally provided Stating also includes OAM management classes in the 4th kind of possible implementation of first aspect, the first LSP Ping request messages Type, length, content OAM Administration TLV, the OAM Administration TLV include：

Enabler flags are alerted, for identifying whether to enable OAM alarm report functions；

Two-way detection mark, for identifying whether to set up the two-way OAM detections function between the source PE and egress PE.

In the 4th kind of possible implementation of the first aspect, additionally provide the first aspect the 5th kind can The implementation of energy, methods described also includes：

Before the first LSP Ping request messages being sent to the egress PE, including：

The source PE configures the OAM message receive capabilities of source OAM entities, and sets the OAM Administration TLV two-way detection is masked as enabled state, to cause the egress PE configures the egress OAM real The OAM message sending function of body, and start the function that the egress OAM entities send OAM message to the source PE；

The first LSP Ping request messages also include VPN OAM sources identity type, length, content VPN OAM Source Identifier TLV, the VPN OAM Source Identifier TLV are for identifying the source PE needs The VPN marks of OAM detections are carried out, wherein, the VPN OAM Source Identifier TLV include：

Source World Wide ID Source Global ID, source end node ID Source Node ID and source Route Distinguisher Source Route Distinguisher information.

In the 5th kind of possible implementation of the first aspect, additionally provide the first aspect the 6th kind can The implementation of energy, the VPN OAM Source Identifier TLV also include：

Source interface ID Source IF ID, need to carry out the interface of OAM detections for identifying the source PE；

Source IP address information, needs to carry out OAM detection routes for identifying the source PE.

In the 4th kind of the first aspect or the 5th kind or the 6th kind of possible implementation, described is additionally provided The OAM included in 7th kind of possible implementation of one side, the first LSP Ping request messages Alarm enabler flags in Administration TLV are illegal state, to cause the egress PE configuring the egress After OAM entities, suppress the egress OAM entities alarm report function, the source OAM entities are enabled to the egress described PE is sent after the function of OAM message, including：

The 2nd LSP Ping request messages are sent to the egress PE, the 2nd LSP Ping request messages are comprising described Alarm enabler flags in OAM Administration TLV, the OAM Administration TLV are enabled state, To cause the egress PE after the 2nd LSP Ping request messages are received, the alarm of the egress OAM entities is enabled Reporting functions.

In the 7th kind of possible implementation of the first aspect, the 8th kind of the first aspect is additionally provided Possible implementation, methods described also includes：

The 2nd LSP Ping response messages that the egress PE is sent are received, the 2nd LSP Ping response messages are pins To the response message of the 2nd LSP Ping request messages；

When the alarm enabler flags for the OAM Administration TLV that the 2nd LSP Ping response messages are included During for enabled state, the alarm report function of the source OAM entities is enabled.

Second aspect includes there is provided a kind of method that OAM is configured, methods described：

Egress provider edge router PE receives the first mark of the carrying source OAM entity configuration information that source PE is sent Sign switching path the Internet packets survey meter LSP Ping request messages；The first LSP Ping request messages also include three layers of void Intend private network L3VPN VPN marks；

Egress OAM entities are configured according to the first LSP Ping request messages, and configure the egress OAM entities to institute State the corresponding VPN of VPN marks to be detected, start the message receive capabilities of the egress OAM entities；

The first LSP Ping response messages are sent to the source PE, the first LSP Ping response messages carry described The configuration information of egress OAM entities.

In the first possible implementation of the second aspect, also wrapped in the first LSP Ping request messages OAM management types, length, content OAM Administration TLV are included, the OAM Administration TLV include：

Two-way detection mark, for identifying whether to set up the two-way OAM detections function between the source PE and egress PE：

When the two-way detection flag is enabled state, the egress PE configures the OAM of the egress OAM entities Message sending function, and start the function that the egress OAM entities send OAM message to the source PE.

In the first possible implementation of the second aspect or the first aspect, described second is additionally provided Second of possible implementation of aspect, the OAM when in the first LSP Ping request messages received When alarm enabler flags in Administration TLV are illegal state, the egress PE is configuring the egress OAM realities After body, suppress the egress OAM entities alarm report function, methods described also includes：

The 2nd LSP Ping request messages that the source PE is sent are received, when in the 2nd LSP Ping request messages Comprising OAM Administration TLV alarm enabler flags be enabled state, enable the announcement of the egress OAM entities Alert reporting functions.

In second of possible implementation of the second aspect, the third for additionally providing the second aspect can The implementation of energy, the 2nd LSP Ping response messages, the 2nd LSP Ping response message bags are sent to the source PE The TLV of Administration containing OAM, as also included OAM in the first LSP Ping request messages When two-way detection in Administration TLV is masked as enabled state, OAM in the 2nd LSP Ping response messages Administration TLV alarm enabler flags are enabled state, to cause the source PE receiving the 2nd LSP After Ping response messages, the alarm report function of the source OAM entities is enabled.

There is provided a kind of source PE for the third aspect, it is characterised in that including：

OAM solid elements, for configuring source OAM entities, and forbid the source OAM entities to be sent out to the egress PE Send OAM message；

Generation unit, the source OAM entities for being configured according to the OAM solid elements generate the first LSP Ping requests Message, the first LSP Ping request messages carry the source OAM entity configuration information, the first LSP Ping requests The message also VPN including Layer3 Virtual Private Network L3VPN is identified, and the VPN is identified for identifying the egress PE equipment needs Carry out the VPN of OAM detections；

Transmitting element, the first LSP Ping request messages for the generation unit to be generated are sent to egress PE, to cause the egress PE to configure egress OAM entities according to the first LSP Ping request messages, starts the egress The message receive capabilities of OAM entities；

Receiving unit, for receiving the first LSP Ping response messages that the egress PE is sent, the first LSP Ping response messages carry the egress OAM entity configuration information of the egress PE；

The OAM solid elements are additionally operable to when the determination egress OAM entity configurations information is matched somebody with somebody with the source OAM entities When putting information matches, the function that the source OAM entities send OAM message to the egress PE is enabled.

In the first possible implementation of the third aspect, the OAM solid elements are additionally operable to when determination institute When stating egress OAM entity configurations information with source OAM entity configurations information mismatch, adjust the source OAM entities and match somebody with somebody Confidence ceases sends OAM reports with the egress OAM entity configuration information matches, the enable source OAM entities to the egress PE The function of text.

In the first possible implementation of the third aspect or the third aspect, the described 3rd is additionally provided Second of possible implementation of aspect, the first LSP Ping request messages of the generation unit generation also include：

OAM management types, length, content OAM Administration TLV, for identifying the VPN marks；It is described OAM Administration TLV include：

Two-way detection mark, for identifying whether to set up the two-way OAM detections function between the source PE and egress PE；

Before the transmitting element sends the first LSP Ping request messages to the egress PE, the OAM is real Body unit, is additionally operable to configure the OAM message receive capabilities of source OAM entities, and sets the OAM Administration The TLV two-way detection is masked as enabled state, to cause the egress PE to configure the OAM message of the egress OAM entities Sending function, and start the function that the egress OAM entities send OAM message to the source PE.

In second of possible implementation of the third aspect, the third for additionally providing the third aspect can The OAM Administration in the implementation of energy, the first LSP Ping request messages of the generation unit generation Alarm enabler flags in TLV are illegal state, to cause the egress PE after the egress OAM entities are configured, to suppress institute State egress OAM entity alarm report functions；

The OAM solid elements enable the source OAM entities to the egress PE send OAM message function it Afterwards, the generation unit, is additionally operable to generate the 2nd LSP Ping request messages, what the 2nd LSP Ping request messages were included Alarm enabler flags in OAM Administration TLV are enabled state；

The transmitting element, the 2nd LSP Ping request messages for being additionally operable to generate the generation unit are sent to The egress PE；To cause the egress PE after the 2nd LSP Ping request messages are received, the egress OAM is enabled The alarm report function of entity.

In the third possible implementation of the third aspect, additionally provide the third aspect the 4th kind can The implementation of energy, it is described to receive unit, it is additionally operable to receive the 2nd LSP Ping response messages that the egress PE is sent；

The OAM solid elements, are additionally operable to the 2nd LSP Ping response messages received when the receiving unit Comprising OAM Administration TLV alarm enabler flags be enabled state when, enable the source OAM entities Alarm report function.

There is provided a kind of egress PE for fourth aspect, it is characterised in that including：

Receiving unit, the first tag changeable path of the carrying source OAM entity configuration information for receiving source PE transmissions Footpath the Internet packets survey meter LSP Ping request messages；The first LSP Ping request messages include Layer3 Virtual Private Network L3VPN VPN marks；

OAM solid elements, the first LSP Ping request messages for being received according to the receiving unit are configured Egress OAM entities, and configure the egress OAM entities corresponding VPN is identified to the VPN and detect, the startup egress The message receive capabilities of OAM entities；

Generation unit, for the egress OAM entities configured according to the OAM solid elements, the first LSP Ping of generation ring Message is answered, the first LSP Ping response messages carry the egress OAM entity configuration information；

Transmitting element, the first LSP Ping response messages for generation unit to be generated are sent to source PE.

In the first possible implementation of the fourth aspect, the receiving unit receive described first LSP Ping request messages also include OAM management types, length, content OAM Administration TLV, the OAM Administration TLV include：

The OAM solid elements, are additionally operable to work as the two-way detection mark in the OAM Administration TLV When will is set to enabled state, the OAM message sending function of the egress OAM entities is also configured, and it is real to start the egress OAM Body sends the function of OAM message to the source PE.

In the first possible implementation of the fourth aspect or the fourth aspect, the described 4th is additionally provided Second of possible implementation of aspect, when in the OAM Administration TLV that the receiving unit is received When alerting enabler flags for illegal state, the OAM solid elements suppress the egress after the egress OAM entities are configured OAM entity alarm report functions；

The receiving unit, is additionally operable to receive the 2nd LSP Ping request messages, the 2nd LSP Ping requests The alarm included in message in the OAM Administration TLV, and the OAM Administration TLV is enabled It is masked as enabled state；

The OAM solid elements, are additionally operable to the 2nd LSP Ping request messages received according to the receiving unit Enable the alarm report function of the egress OAM entities.

In second of possible implementation of the fourth aspect, the third for additionally providing the third aspect can The implementation of energy, the generation unit is additionally operable to generate the 2nd LSPPing response messages；Wherein, it is described during two-way detection The OAM Administration TLV included in 2nd LSP Ping response messages alarm enabler flags are enable shape State；

The transmitting element, is additionally operable to send the 2nd LSP Ping of the generation unit generation to the source PE Response message；To cause the source PE after the 2nd LSPPing response messages are received, the source OAM entities are enabled Alarm report function.

5th aspect configures system there is provided a kind of OAM, and the system includes：

The source of offer in any one possible implementation that the third aspect or the third aspect are provided PE；

The egress of offer in any one possible implementation that the fourth aspect or the fourth aspect are provided PE。

The embodiment of the present invention provides a kind of method, equipment and the system of OAM configurations, and source PE device configuration sources OAM is real After body, egress PE equipment is sent to by extending LSP Ping request messages by the OAM configuration informations of the source PE, to cause The egress PE configures egress PE egress OAM entities according to the source OAM configuration informations, and it is real to start the egress OAM Body sends the function of OAM message to the source PE；The LSP Ping request messages, which contain the egress PE, needs progress The VPN marks of OAM detections, after the source PE and egress PE OAM entity configurations are good, the enable source OAM entities to The egress PE sends the function of OAM message, thus, completes source PE and egress PE OAM configuration works, and source OAM is real Body and egress OAM entities can enable corresponding alarm report function, and reducing two ends by above-mentioned implementation configures matching somebody with somebody for OAM Workload is put, because two ends are come dynamic to complete OAM configurations by interaction LSP Ping message, it is to avoid appearance in manual configuration Mistake.

Brief description of the drawings

In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing There is the accompanying drawing used required in technology description to be briefly described, it should be apparent that, drawings in the following description are only this Some embodiments of invention, for those of ordinary skill in the art, on the premise of not paying creative work, can be with Other accompanying drawings are obtained according to these accompanying drawings.

Fig. 1 is OAM configuration process schematic diagrames between PE equipment in VPN provided in an embodiment of the present invention；

Fig. 2 is a kind of schematic flow sheet of OAM collocation methods provided in an embodiment of the present invention；

Fig. 3 is OAM Function TLV schematic diagrames provided in an embodiment of the present invention；

Fig. 4 is VPNv4 OAM FEC Stack TLV form schematic diagrams provided in an embodiment of the present invention；

Fig. 5 is VPNv6OAM FEC Stack TLV form schematic diagrams provided in an embodiment of the present invention；

Fig. 6 is OAM Administration TLV form schematic diagrams provided in an embodiment of the present invention；

Fig. 7 is VPNv4 OAM Source Identifier TLV form schematic diagrams provided in an embodiment of the present invention;

Fig. 8 is VPNv6 OAM Source Identifier TLV form schematic diagrams provided in an embodiment of the present invention;

Fig. 9 carries the OAM Administration TLV that alarm enables bit to be provided in an embodiment of the present invention；

Figure 10 is the schematic flow sheet of another OAM collocation methods provided in an embodiment of the present invention；

Figure 11 is a kind of system schematic of OAM configurations provided in an embodiment of the present invention；

The system schematic that Figure 12 configures for another OAM provided in an embodiment of the present invention.

Embodiment

Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete Site preparation is described, it is clear that described embodiment is only a part of embodiment of the invention, rather than whole embodiments.It is based on Embodiment in the present invention, it is every other that those of ordinary skill in the art are obtained under the premise of creative work is not made Embodiment, belongs to the scope of protection of the invention.

Fig. 1 is OAM configuration process schematic diagrames between PE equipment in VPN, and PE1 10 represents source Provider Edge road By device PE, PE211 represents egress provider edge router PE.PE211 issues label to PE110；PE110 uses these labels Message encapsulation is carried out, to PE211 transmitting data flows.The direction of OAM perform detections is identical with the direction of forwarding data flow.At this PE110 is used as drive end under scape --- and i.e. (English full name is Label to source initiation label switched path the Internet packets survey meter Switched Path Packet Internet Grope, English abbreviation is LSP Ping) request message；PE211 is as passive End --- i.e. egress responds LSP Ping response messages.

It should be noted that said process is one-way process, if PE110 and PE211 two ends mutually send label and formed Two-way converting, then OAM is two-way execution, and either end PE can be that source PE is also egress PE as source, i.e. PE110, PE211 is that egress PE is also source PE.

Referring to Fig. 2, the embodiments of the invention provide a kind of method of OAM configurations, this method includes herein below.

201, source PE configure source OAM entities, and forbid the source OAM entities to send OAM to the egress PE Message.

In all embodiments of the invention, illustrated so that the VPN in L3VPN networks carries out OAM detections as an example.Actively send out The one end for playing LSP Ping request messages (LSP Ping Echo Request) is source PE；Passively receiving the LSP Ping please Message (LSP Ping Echo Reply) is sought, and it is egress PE to respond one end of LSP Ping response messages.

As the source PE for initiating LSP Ping request messages, when configuring source OAM entities, source OAM hairs are configured Send function, in order to avoid source OAM entities and egress OAM entities it is no consult configuration it is good before, source OAM entities send OAM Message, and cause OAM entities and egress OAM entity configurations unsuccessful, therefore, do not having in source OAM entities and egress OAM entities Before having negotiation configuration good, the source OAM entities are forbidden to send OAM message to the egress PE.

It is exemplary, when the same VPN belonging to source PE and egress PE will carry out OAM detections, and now source PE with Egress PE does not carry out the configuration of corresponding OAM entities, then source PE need to be configured to source OAM entities.For example, can be right The source OAM entities carry out following configuration：Continuity detection, detection of connectivity, mistake manages signal detection, packet loss inspection Survey, postpone detection, flow detection etc..

202, disappear to the egress PE the first LSP Ping requests for sending the carrying source OAM entity configuration information Breath, to cause egress PE egress PE according to source OAM entity configuration information configurations egress OAM entities, is opened The message receive capabilities of the egress OAM entities are moved, the first LSP Ping request messages also VPN including L3VPN is identified, The VPN is identified to be needed to carry out the VPN of OAM detections for identifying the egress PE equipment.

The egress PE can according to the configuration informations of source OAM entity configuration information configuration egress OAM entities, for example, When including packet loss detection in the source OAM entity configuration information, the egress PE is when configuring the egress OAM entities Configuration carries out packet loss detection, but the egress PE is when configuring the parameter of OAM packet loss detections, can be according to the ability of the egress PE It is different with the source OAM entity configuration information.

Alternatively, the source OAM entity configurations information can pass through OAM(Operation Administration Maintenance) (Function) type, length, content TLV is carried, and the OAM Function TLV can be found in [draft-ietf-mpls-lsp-ping-mpls-tp-oam- Conf-03], as shown in Figure 3：

C flag bits are used for identifying continuity detection (English full name is Continuity Check, and English abbreviation is CC)；

For identifying detection of connectivity, (English full name is Connectivity Verification, English letter to V flag bits Referred to as CV)；

For identifying mistake manages signal detection, (English full name is Fault Management Signals, English to F flag bits Text is referred to as FMS)；

L flag bits are used for identifying packet loss detection (Loss)；

D flag bits are used for identifying delay detection (Delay)；

For identifying flow detection, (English full name is Throughput Measurement, and English abbreviation is for T flag position TM)。

Optionally, the first LSP Ping request messages also include Virtual Private Network OAM forwarding equivalence class stack type, length Degree, content (VPN OAM FEC Stack TLV), the first LSP Ping request messages pass through the VPN OAM FEC Stack TLV carry the VPN marks.The VPN OAM FEC TLV include：Target World Wide ID (Target Global ID), the letter of destination node ID (Target Node ID) and target Route Distinguisher (Target Route Distinguisher) Breath, Fig. 4 is the message format schematic diagram when VPN OAM FEC Stack TLV carry IPv4 VPN marks, and Fig. 5 is described VPN OAM FEC Stack TLV carry message format schematic diagram during IPv6VPN marks.The VPN can be by with lower section Formula is identified：

Target Global ID::Target Node ID::(target is route Target Route Distinguisher Mark).Alternatively, it can also include in the VPN OAM FEC Stack TLV：Target interface ID (Target IF ID), Need to carry out the interface of OAM detections for identifying the egress PE；For Fig. 4, the VPN OAM FEC Stack TLV are also wrapped Target IP v4 prefix (Target IPv4 prefix) and prefix length (Prefix Length) is included, for identifying the place End PE needs to carry out the IPv4VPN routes of OAM detections；For Fig. 5, the VPN OAM FEC Stack TLV also include target IPv6 prefix information (Target IPv6 prefix) and prefix length (Prefix Length), for identifying the egress PE needs to carry out OAM detection IPv6VPN routes.

Above Target Glob al_ID, Target Node_ID and Target IF_NUM setting are followed The definition of [RFC6370], Target Route Distinguisher setting follows the definition of [RFC4364].

Alternatively, with reference to Fig. 4 and Fig. 5, the form of the VPN OAM FEC Stack TLV can be：1-4 bytes can To indicate Target Global ID, 5-8 bytes can indicate Target Node ID, and 9-16 bytes can be indicated Target Route Distinguisher, 17-20 bytes can indicate Target IF ID, and 21-24 bytes can refer to Show Target IPv4prefix and Target IPv6 prefix, the 25th byte can indicate prefix length, 26-28 Byte can be 0.

203, receive the first LSP Ping response messages that the egress PE is sent, the first LSP Ping response messages The egress OAM entity configuration information is carried, when it is determined that the egress OAM entity configurations information is matched somebody with somebody with the source OAM entities When putting information matches, the function that the source OAM entities send OAM message to the egress PE is enabled.

After the egress PE configures the egress OAM entities, the first LSP Ping are sent to the source PE Response message.Because the egress PE self-abilities limitation egress OAM entity configurations information may be with the source OAM Entity configuration information is mismatched.

Alternatively, when it is determined that the egress OAM entity configurations information is mismatched with the source OAM entity configurations information When, the source OAM entity configurations information and the egress OAM entity configuration information matches are adjusted, then, the source are enabled OAM entities send the function of OAM message to the egress PE.For example, by taking packet loss detection as an example, with reference to Fig. 3, if mark is lost When wrapping the L flag bit set of detection, and specific packet loss detection mode in the configuration information of the source OAM entities is direct Detection mode (Direct), i.e., directly test service message, after egress PE receives the configuration information of OAM entities, sentences Disconnected egress PE only supports plug-in type detection mode (Inferred), and the egress PE can only configure the configuration ginseng of the egress OAM Number is Inferrer detection modes, and the egress PE passes through the first LSP to by the egress PE OAM configuration informations supported Ping response messages are sent to the source PE, after the source PE receives the first LSP Ping response messages, hair Existing egress PE OAM configuration informations and the configuration information of the source OAM entities are mismatched, then adjust matching somebody with somebody for source OAM Packet loss detection mode in confidence breath is Inferred modes.

Alternatively, source PE sends the first LSP Ping request messages to egress PE and also included：OAM management types, length, Content (OAM Administration TLV), the OAM Administration TLV, Fig. 6 is the OAM Administration TLV message format schematic diagrames, wherein：

Intermediate suppliers router P enables OAM detection mark I, for identifying whether to enable middle P equipment OAM detections；

Enabler flags A is alerted, for identifying whether to enable OAM alarm report functions；

Two-way detection mark D, for identifying whether to set up the detection work(of the two-way OAM between the source PE and egress PE Energy.

Optionally, with reference to shown in Fig. 6, OAM Administration TLV form can be：OAM Administration TLV the 1st, 2 bytes can indicate OAM Administration TLV type, OAM Administration TLV the 3rd, 4 bytes can indicate OAM Administration TLV length, OAM Administration TLV the 5th to 8 byte can indicate the configuration information of OAM detections.

Wherein, the 1st bit (I indicates in Fig. 6) of OAM Administration TLV the 5th byte indicates middle supply Business's router P enables OAM detection marks, for identifying whether to enable middle P equipment OAM detections, if the bit set, represents It is required that transmission node creates OAM Maintenance Entities intermediate point (MIP) entity to the first LSP Ping request messages on the way.OAM The 2nd bit (A indicates in Fig. 6) of Administration TLV the 5th byte is used to identify whether to enable OAM alarm report work( Can, when the bit set, the equipment of the first LSP Ping request messages is received after OAM entities are configured, and is enabled and is accused Alert reporting functions, i.e., produce related trigger action, including report and alarm when OAM detects failure, when the bit resets, then accuse It is alert to be suppressed and not triggering following action.D in 3rd bit (Fig. 6) of OAM Administration TLV the 5th byte Mark) it is used to identify whether to set up the two-way OAM detections function between the source PE and egress PE, the bit set is represented Need to do two-way detection.Remaining the 5th byte remaining bits and the 6th, the 7th, the 8th byte be it is reserved, it is convenient that OAM configurations are made in the future It can be extended.

Further, for two-way detection, the source PE is asked to egress PE transmissions the first LSP Ping Ask before message, the source PE also configures the OAM message receive capabilities of source OAM entities, and sets the first LSP The two-way detection flag set of OAM Administration TLV in Ping request messages, will the two-way detection mark Enabled state is set to, to cause the egress PE to also configure the OAM message sending function of the egress OAM entities, and is started The egress OAM entities send the function of OAM message to the source PE.

Optionally, for two-way detection, the first LSP Ping request messages also include：VPN OAM sources identity type, Length, content (VPN OAM Source Identifier TLV), the VPN OAM Source Identifier TLV are used Need to carry out the VPN marks of OAM detections in identifying the source PE, Fig. 7 is the VPN OAM Source Identifier TLV carries message format schematic diagram during IPv4 VPN marks, and Fig. 8 is the VPN OAM Source Identifier TLV Message format schematic diagram during IPv6VPN marks is carried, wherein, wrapped in the VPN OAM Source Identifier TLV Include：

VPN OAM Source Identifier TLV type, VPN OAM Source Identifier TLV length Degree, source World Wide ID (Source Global ID), source end node ID (Source Node ID) and source target Route Distinguisher The information of (Source Route Distinguisher), the source PE needs the VPN for carrying out OAM detections can be by following Mode is identified：

Source Global ID::Source Node ID::Source Route Distinguisher。

Alternatively, it can also include in the VPN OAM Source Identifier TLV：Source interface ID (Source IF ID), needs to carry out the interface of OAM detections for identifying the source PE；For in Fig. 7, in addition to also include Source IP v4 prefix (Source IPv4 prefix) and prefix length (Prefix Length), for identifying the source PE The IPv4VPN for carrying out OAM detections is needed to route；For Fig. 8, the VPN OAM FEC Stack TLV also include source IP v6's Prefix information (Source IPv6 prefix) and prefix length (Prefix Length), for identifying the egress PE needs Carry out OAM detection IPv6VPN routes.

Optionally, with reference to Fig. 7 and Fig. 8, the form of the VPN OAM Source Identifier TLV can be：1-2 Byte can indicate VPN OAM Source Identifier TLV type, and 3-4 bytes can indicate VPN OAM Source Identifier TLV length, 5-8 bytes can indicate Source Global ID, and 9-16 bytes can be with Source Node ID are indicated, 17-20 bytes can indicate Source IF ID, and 21-24 bytes can indicate Source IPv4 (in Fig. 7)/IPv6prefix (in Fig. 8), the 25th byte can indicate prefix length, and 26-28 bytes can be 0。

Alternatively, to prevent during the source OAM entities and the egress OAM entity configurations, the source OAM Entity and the egress OAM entities are before no all completions configuration, or the source OAM entities and the egress OAM entities Configuration information causes the egress OAM physically to report fault alarm when mismatching, and further triggers the egress PE or source PE OAM Administration in the problem of carrying out faulty operation according to false alarm, the first LSP Ping request messages TLV alarm enabler flags can be illegal state, to cause the egress PE after the egress OAM entities are configured, to suppress The egress OAM entities alarm report function, further, sends in the enable source OAM entities to the egress PE After the function of OAM message, including：

The 2nd LSP Ping request messages are sent to the egress PE, the 2nd LSP Ping request messages include OAM Announcement in Administration TLV, the OAM Administration TLV that the 2nd LSP Ping request messages are included Alert enabler flags are enabled state, with reference to shown in Fig. 9, the OAM carried in the 2nd LSP Ping request messages The bit 1 enabled in Administration TLV containing mark alarm (can also be any, as long as enable alarm can be identified ), it can be sky, the egress that remaining two-way detection mark D and intermediate suppliers router P, which enables OAM detection marks I, PE enables the alarm report function of the egress OAM entities after the 2nd LSP Ping request messages are received.

Alternatively, the source PE receives the 2nd LSP Ping response messages that the egress PE is sent, the 2nd LSP Ping response messages are the response messages for the 2nd LSP Ping request messages, and the egress PE receives described second After LSP Ping response messages, you can to start to send OAM detection messages, the source PE and the egress to the egress PE PE starts to identify corresponding VPN progress OAM detections for the VPN that the first LSP Ping request messages include.

When the two-way detection mark of the OAM Administration TLV in the first LSP Ping request messages is put Position, the egress PE also configures the egress OAM message sending function after the egress OAM entities are configured, that is, starts described Egress PE detects function, and the OAM that will be included in the 2nd LSP Ping response messages to the OAM in the source PE directions Administration TLV alarm enabler flags are set to enabled state, when the source PE receive described second When the alarm enabler flags for the OAM Administration TLV that LSP Ping response messages are included are enabled state, institute is enabled State the alarm report function of source OAM entities.

Furthermore, it is necessary to explanation, the process that renewal and session for OAM configuration parameters are deleted, with said process phase Seemingly, all it is that source PE and egress PE carry the LSP Ping request messages of relevant information by sending and LSP Ping responses disappear Breath, by source PE and egress PE negotiations process, the parameter of intercorrelation deletes process to carry out parameter renewal and session.

The embodiment of the present invention is provided after a kind of method of OAM configurations, source PE device configuration source OAM entities, by expanding The OAM configuration informations of the source PE are sent to egress PE equipment by exhibition LSP Ping request messages, to cause the egress PE Egress PE egress OAM entities are configured according to the source OAM configuration informations, and start the egress OAM entities to the source PE is held to send OAM message；The LSP Ping request messages, which contain the egress PE, to be needed to carry out the VPN marks of OAM detections, After the source PE and egress PE OAM entity configurations are good, enable the source OAM entities and send OAM to the egress PE The function of message, thus, completes source PE and egress PE OAM configuration works, source OAM entities and egress OAM entities can Corresponding alarm report function is enabled, the configuration work amount that two ends configure OAM is reduced by above-mentioned implementation, due to two ends Carry out the dynamic OAM that completes by interaction LSP Ping message to configure, it is to avoid the mistake occurred in manual configuration.

Referring to Figure 10, the embodiments of the invention provide the method for another OAM configurations, this method includes herein below.

301, egress provider edge router PE receive the of the carrying source OAM entity configuration information that source PE is sent One label switched path the Internet packets survey meter LSP Ping request messages；The first LSP Ping request messages also include three Layer virtual private network L3VPN VPN marks.

302, egress OAM entities are configured according to the first LSP Ping request messages, and configure the egress OAM entities Corresponding VPN is identified to the VPN to detect, starts the message receive capabilities of the egress OAM entities.

303, the first LSP Ping response messages are sent to the source PE, the first LSPPing response messages are carried The configuration information of the egress OAM entities.

Alternatively, the source OAM entity configurations information can be carried by OAM Function TLV, the OAM Function TLV have been noted above in Fig. 3, and here is omitted.

Optionally, the first LSP Ping request messages also include virtual private network OAM FEC Stack TLV, The first LSP Ping request messages carry the VPN by the VPN OAM FEC Stack TLV and identified.The VPN OAM FEC TLV include：Target World Wide ID (Target Global ID), destination node ID (Target Node ID) and mesh The information of Route Distinguisher (Target Route Distinguisher) is marked, Fig. 4 is that the VPN OAM FEC Stack TLV take Message format schematic diagram when being identified with IPv4VPN, Fig. 5 is that the VPN OAM FEC Stack TLV carry IPv6VPN marks When message format schematic diagram.The VPN can be identified in the following manner：

Target Global ID::Target Node ID::(target is route Target Route Distinguisher Mark).

Alternatively, it can also include in the VPN OAM FEC Stack TLV：Target interface ID (Target IF ID), need to carry out the interface of OAM detections for identifying the egress PE；For Fig. 4, the VPN OAM FEC Stack TLV Prefix (Target IPv4 prefix) and prefix length (Prefix Length) also including Target IP v4, for identifying Stating egress PE needs to carry out the IPv4 VPN routes of OAM detections；For Fig. 5, the VPN OAM FEC Stack TLV also include Target IP v6 prefix information (Target IPv6 prefix) and prefix length (Prefix Length), it is described for identifying Egress PE needs to carry out OAM detection IPv6VPN routes.

Optionally, for two-way detection, the first LSP Ping request messages also include：VPN OAM Source Identifier TLV, the VPN OAM Source Identifier TLV need to carry out OAM for identifying the source PE The VPN marks of detection, Fig. 7 is the message lattice when VPNOAM Source Identifier TLV carry IPv4VPN marks Formula schematic diagram, Fig. 8 is that the message format when VPN OAM Source Identifier TLV carry IPv6VPN marks shows It is intended to.

Alternatively, the first LSP Ping request messages also include OAM Administration TLV, Fig. 6 for for institute OAM Administration TLV message format schematic diagrames are stated, are had been noted above, here is omitted

Alternatively, when in the OAM Administration TLV in the first LSP Ping request messages received Alarm enabler flags when being illegal state, the egress PE suppresses the egress OAM after the egress OAM entities are configured Entity alarm report function, methods described also includes：

Alternatively, when in also included OAM Administration TLV in the first LSP Ping request messages When two-way detection is masked as enabled state, the 2nd LSP Ping response messages, the 2nd LSP are sent to the source PE Ping response messages include OAM in OAM Administration TLV, the 2nd LSP Ping response messages Administration TLV alarm enabler flags are enabled state, to cause the source PE receiving the 2nd LSP After Ping response messages, the alarm report function of the source OAM entities is enabled.

Referring to Figure 11, the embodiments of the invention provide a kind of system of OAM configurations, the system includes：Source PE10 and Egress PE20.

The source PE10 includes：

OAM solid elements 101, for configuring source OAM entities, and forbid the source OAM entities to the egress PE20 sends OAM message.

Generation unit 102, the source OAM entities for being configured according to the OAM solid elements 101 generate the first LSP Ping request messages, the first LSP Ping request messages carry the source OAM entity configuration information, the first LSP The Ping request messages also VPN including L3VPN is identified, and the VPN is identified to be needed to carry out OAM for identifying the egress PE equipment The VPN of detection.

Transmitting element 103, the first LSP Ping request messages for the generation unit 102 to be generated are sent to Egress PE20.

Receiving unit 104, for receiving the first LSP Ping response messages that the egress PE20 is sent, described first LSP Ping response messages carry the egress OAM entity configuration information.

The OAM solid elements 101, the first LSP Ping for being additionally operable to be received according to the receiving unit 104 ring The egress OAM entity configuration information carried in message is answered, when it is determined that the egress OAM entity configurations information and the source During OAM entity configuration information matches, the function that the source OAM entities send OAM message to the egress PE20 is enabled.

The egress PE20 includes：

Receiving unit 201, for receiving the carrying source OAM entity configurations letter that source PE10 transmitting element 103 is sent First LSP Ping request messages of breath, the first LSP Ping request messages include Layer3 Virtual Private Network L3VPN VPN Mark.

OAM solid elements 202, the first LSP Ping requests for being received according to the receiving unit 201 disappear Breath configuration egress OAM entities, start the message receive capabilities of the egress OAM entities.

Generation unit 203, it is raw for the configuration information of the egress OAM entities configured according to the OAM solid elements 202 Into the first LSP Ping response messages, the first LSP Ping response messages carry the egress OAM entity configuration information.

Transmitting element 204, the first LSP Ping response messages for generation unit 203 to be generated are sent to source PE10。

Optionally, the OAM solid elements 101 of the source P E10, are additionally operable to when the determination egress OAM entity configurations When information is mismatched with the source OAM entity configurations information, the source OAM entity configurations information and the egress are adjusted OAM entity configuration information matches, enable the function that the source OAM entities send OAM message to the egress PE20.

Alternatively, the source OAM entity configurations information can be carried by OAM Function TLV, the OAM Function TLV forms are as shown in Figure 3.

Alternatively, the first LSP Ping request messages that the generation unit 102 of the source PE10 is generated also include VPN OAM FEC Stack TLV, the first LSP Ping request messages are taken by the VPN OAM FEC Stack TLV With VPN marks.The VPN OAM FEC TLV include：Target World Wide ID (Target Global ID), destination node ID (Target Node ID) and target Route Distinguisher (Target Route Distinguisher) information, Fig. 4 are the VPN OAM FEC Stack TLV carry message format schematic diagram during IPv4 VPN marks, and Fig. 5 is the VPN OAM FEC Stack TLV carry message format schematic diagram during IPv6 VPN marks.The VPN can be identified in the following manner：

Alternatively, it can also include in the VPN OAM FEC Stack TLV：Target interface ID (Target IF ID), need to carry out the interface of OAM detections for identifying the egress PE20；For Fig. 4, the VPN OAM FEC Stack Prefixes (Target IPv4 prefix) and prefix length (Prefix Length) of the TLV also including Target IP v4, for identifying The egress PE20 needs to carry out the IPv4 VPN routes of OAM detections；For Fig. 5, the VPN OAM FEC Stack TLV are also Prefix information (Target IPv6 prefix) and prefix length (Prefix Length) including Target IP v6, for identifying The egress PE20 needs to carry out OAM detection IPv6VPN routes.

Alternatively, the first LSP Ping request messages that the generation unit 102 of the source PE10 is generated also include:

OAM Administration TLV, for identifying the VPN marks；The OAM Administration TLV Including：

The first LSP Ping requests are sent in the transmitting element 103 of the source P E10 to the egress PE20 to disappear Before breath, the OAM solid elements 101 of the source PE10 are additionally operable to configure the OAM message receive capabilities of source OAM entities, and The two-way detection of the OAM Administration TLV is set to be masked as enabled state, to cause the egress PE20 The OAM message sending function of the egress OAM entities is configured, and starts the egress OAM entities and sends OAM to the source PE The function of message.Correspondingly, the OAM solid elements 202 of the egress PE20, are additionally operable to work as the OAM Administration When the two-way detection flag in TLV is enabled state, the OAM message for also configuring the egress OAM entities sends work( Can, and start the function that the egress OAM entities send OAM message to the source PE10.

Optionally, for two-way detection, the first LSP Ping request messages also include：VPN OAM Source Identifier TLV, the VPN OAM Source Identifier TLV need progress for identifying the source PE10 The VPN marks of OAM detections, Fig. 7 is the report when VPN OAM Source Identifier TLV carry IPv4VPN marks Literary form schematic diagram, Fig. 8 is the message lattice when VPN OAM Source Identifier TLV carry IPv6VPN marks Formula schematic diagram.

Alternatively, it can also include in the VPN OAM Source Identifier TLV：Source interface ID (Source IF ID), needs to carry out the interface of OAM detections for identifying the source P E10；For in Fig. 7, in addition to also Prefix (Source IPv4 prefix) and prefix length (Prefix Length) including source IP v4, for identifying the source End PE10 needs to carry out the IPv4VPN routes of OAM detections；For Fig. 8, the VPN OAM FEC Stack TLV also include source IPv6 prefix information (Source IPv6 prefix) and prefix length (Prefix Length), for identifying the egress PE10 needs to carry out OAM detection IPv6 VPN routes.

Alternatively, the first LSP Ping request messages also include OAM Administration TLV, Fig. 6 for for institute OAM Administration TLV message format schematic diagrames are stated, are had been noted above, here is omitted.

Alternatively, the OAM in the first LSP Ping request messages that the generation unit 102 of the source PE10 is generated Alarm enabler flags in Administration TLV are illegal state, when the receiving unit 201 of the egress PE20 is received The OAM Administration TLV in alarm enabler flags when being illegal state, the OAM of the egress PE20 is real Body unit 202 suppresses the egress OAM entities alarm report function after the egress OAM entities are configured.

The source OAM entities are enabled to egress PE transmissions OAM in the OAM solid elements 101 of the source PE10 After the function of message, the generation unit 102 of the source PE10 is additionally operable to generate the 2nd LSP Ping request messages, described Alarm enabler flags in the OAM Administration TLV that 2nd LSP Ping request messages are included are enabled state.

Correspondingly, the receiving unit 201, is additionally operable to receive the 2nd LSP Ping request messages, the egress PE20 OAM solid elements 202, are additionally operable to the 2nd LSP Ping request messages received according to the receiving unit 201 Enable the alarm report function of the egress OAM entities.

The transmitting element 103 of the source PE10, is additionally operable to the 2nd LSP for generating the generation unit 102 Ping request messages are sent to the egress PE20, and correspondingly the receiving unit 201 of the egress PE20 is additionally operable to receive institute The 2nd LSP Ping request messages are stated, the OAM solid elements 202 of the egress PE20, which are additionally operable to work as, judges the receiving unit 201 alarms for being additionally operable to receive in the OAM Administration TLV that the 2nd LSP Ping request messages are included make When can be masked as enabled state, the alarm report function of the egress OAM entities is enabled.

Alternatively, the source PE10 receives unit 104, is additionally operable to receive the egress PE20 is sent second LSP Ping response messages.

The generation unit 203 of the egress PE20, is additionally operable to generate the 2nd LSP Ping response messages；Wherein, two-way inspection During survey, the OAM Administration TLV included in the 2nd LSP Ping response messages alarm enabler flags For enabled state.

The transmitting element 204 of the egress PE20, is additionally operable to generate to the source PE10 transmissions generation unit 203 The 2nd LSP Ping response messages.

The OAM solid elements 101 of the source PE10, are additionally operable to work as the receiving unit 104 is received described second When the alarm enabler flags for the OAM Administration TLV that LSP Ping response messages are included are enabled state, institute is enabled State the alarm report function of source OAM entities.

The embodiment of the present invention is provided after a kind of system of OAM configurations, source PE10 configuration source OAM entities, passes through extension The OAM configuration informations of the source PE10 are sent to egress PE20 equipment by LSP Ping request messages, to cause the egress PE20 configures egress PE20 egress OAM entities according to the source OAM configuration informations, and start the egress OAM entities to The source PE10 sends OAM message；The LSP Ping request messages, which contain the egress PE20, to be needed to carry out OAM detections VPN marks, after the source PE10 and egress PE20 OAM entity configurations are good, the enable source OAM entities are to described Egress PE20 sends the function of OAM message, thus, completes source PE10 and egress PE20 OAM configuration works, source OAM Entity and egress OAM entities can enable corresponding alarm report function, and reducing two ends by above-mentioned implementation configures OAM's Configuration work amount, carry out the dynamic OAM that completes by interaction LSP Ping message due to two ends and configure, it is to avoid goes out in manual configuration Existing mistake.

Referring to Figure 12, the embodiments of the invention provide the system of another OAM configurations, the system includes：Source PE30 With egress PE40.

The source PE30 includes：

Processor 301, for configuring source OAM entities, and forbids the source OAM entities to be sent out to the egress PE30 OAM message is sent, is additionally operable to generate the first LSP Ping request messages, the first LSP Ping request messages carry the source OAM entity configuration information, the first LSP Ping request messages also VPN including L3VPN is identified, and the VPN, which is identified, to be used for Identifying the egress PE40 needs to carry out the VPN of OAM detections.

Transmitter 302, the first LSP Ping request messages for the processor 301 to be generated are sent to egress PE40。

Receiver 303, for receiving the first LSP Ping response messages that the egress PE40 is sent, the first LSP Ping response messages carry the egress OAM entity configuration information.

The processor 301, is additionally operable in the first LSP Ping response messages according to the receiver 303 reception The egress OAM entity configuration information of carrying, when it is determined that the egress OAM entity configurations information and the source OAM entity configurations During information matches, the function that the source OAM entities send OAM message to the egress PE40 is enabled.

The egress PE40 includes：

Receiver 401, for receiving the carrying source OAM entity configuration information that source PE30 transmitter 302 is sent First LSP Ping request messages；The VPN that the first LSP Ping request messages include L3VPN is identified.

Processor 402, the first LSP Ping request messages for being received according to the receiver 401 configure place OAM entities are held, start the message receive capabilities of the egress OAM entities, and for generating the first LSP Ping response messages, institute State the first LSP Ping response messages and carry the egress OAM entity configuration information.

Transmitter 403, the first LSP Ping response messages for processor 402 to be generated are sent to source PE30。

Optionally, the processor 301 is additionally operable to when the determination egress OAM entity configurations information and the source OAM When entity configuration information is mismatched, the source OAM entity configurations information and the egress OAM entity configuration information are adjusted Match somebody with somebody, enable the function that the source OAM entities send OAM message to the egress PE40.

Alternatively, the first LSP Ping request messages that the processor 301 of the source PE30 is generated also include VPN OAM FEC Stack TLV, the first LSP Ping request messages carry institute by the VPN OAM FEC Stack TLV State VPN marks.The VPN OAM FEC TLV include：Target World Wide ID (Target Global ID), destination node ID (Target Node ID) and target Route Distinguisher (Target Route Distinguisher) information, Fig. 4 are the VPN OAM FEC Stack TLV carry message format schematic diagram during IPv4VPN marks, and Fig. 5 is the VPN OAM FEC Stack TLV carries message format schematic diagram during IPv6 VPN marks.The VPN can be identified in the following manner：

Alternatively, it can also include in the VPN OAM FEC Stack TLV：Target interface ID (Target IF ID), need to carry out the interface of OAM detections for identifying the egress PE40；For Fig. 4, the VPN OAM FEC Stack Prefixes (Target IPv4 prefix) and prefix length (Prefix Length) of the TLV also including Target IP v4, for identifying The egress PE20 needs to carry out the IPv4 VPN routes of OAM detections；For Fig. 5, the VPN OAM FEC Stack TLV are also Prefix information (Target IPv6 prefix) and prefix length (Prefix Length) including Target IP v6, for identifying The egress PE20 needs to carry out OAM detection IPv6VPN routes.

Alternatively, the first LSP Ping request messages that the processor 301 of the source PE30 is generated also include:

The source PE30 transmitter 303 to the egress PE40 send the first LSP Ping request messages it Before, the processor 301 of the source PE30 is additionally operable to configure the OAM message receive capabilities of source OAM entities, and sets described The OAM Administration TLV two-way detection is masked as enabled state.Correspondingly, the processing of the egress PE40 Device 402, is additionally operable to when the two-way detection flag in the OAM Administration TLV is enabled state, The OAM message sending function of the egress OAM entities is also configured, and starts the egress OAM entities and is sent out to the source PE30 Send the function of OAM message.

Optionally, for two-way detection, the first LSP Ping request messages also include：VPN OAM Source Identifier TLV, the VPN OAM S ource Identifier TLV need progress for identifying the source PE30 The VPN marks of OAM detections, Fig. 7 is the report when VPN OAM Source Identifier TLV carry IPv4VPN marks Literary form schematic diagram, Fig. 8 is the message lattice when VPN OAM Source Identifier TLV carry IPv6VPN marks Formula schematic diagram.

Alternatively, it can also include in the VPN OAM Source Identifier TLV：Source interface ID (Source IF ID), needs to carry out the interface of OAM detections for identifying the source PE30；For in Fig. 7, in addition to also wrap Source IP v4 prefix (Source IPv4 prefix) and prefix length (Prefix Length) is included, for identifying the source PE30 needs to carry out the IPv4VPN routes of OAM detections；For Fig. 8, the VPN OAM FEC Stack TLV also include source IPv6 prefix information (Source IPv6 prefix) and prefix length (Prefix Length), for identifying the egress PE30 needs to carry out OAM detection IPv6 VPN routes.

Alternatively, the first LSP Ping request messages are described also including OAM Administration TLV, Fig. 6 OAM Administration TLV message format schematic diagrames, have been noted above, here is omitted.

Alternatively, the OAM in the first LSP Ping request messages that the processor 301 of the source PE30 is generated Alarm enabler flags in Administration TLV are illegal state, the OAM received when the receiver 401 When alarm enabler flags in Administration TLV are illegal state, the processor 402 is configuring the egress OAM After entity, suppress the egress OAM entities alarm report function.

The source OAM entities are enabled to egress PE40 transmission OAM messages in the processor 301 of the source PE30 Function after, the processor 301 is additionally operable to generate the 2nd LSP Ping request messages, and the 2nd LSP Ping request disappears It is enabled state to cease the alarm enabler flags in the OAMAdministration TLV included.

Correspondingly, the receiver 401 of the egress PE40 is additionally operable to receive the 2nd LSPPing request messages, described Processor 402, the 2nd LSP Ping request messages for being additionally operable to be received according to the receiver 401 enable the egress The alarm report function of OAM entities.

The transmitter 302 of the source PE30, the 2nd LSP Ping for being additionally operable to generate the processor 301 please Message is asked to be sent to the egress PE40, correspondingly the receiver 401 is additionally operable to receive the 2nd LSP Ping requests Message, the processor 402, which is additionally operable to work as, judges that the receiver 401 receives the 2nd LSP Ping request messages and included OAM Administration TLV in alarm enabler flags when being enabled state, enable the announcement of the egress OAM entities Alert reporting functions.

Alternatively, the 2nd LSP for receiving device 303, being additionally operable to receive the egress PE40 transmissions of the source PE30 Ping response messages.

The processor 402 of the egress PE40, is additionally operable to generate the 2nd LSP Ping response messages；Wherein, two-way detection When, the OAM Administration TLV included in the 2nd LSP Ping response messages alarm enabler flags are Enabled state.

The transmitter 403 of the egress PE40, is additionally operable to send the institute that the processor 402 is generated to the source PE30 State the 2nd LSP Ping response messages.

The processor 303 of the source PE30, the 2nd LSP Ping for being additionally operable to receive when the receiver 303 ring When the alarm enabler flags for answering the OAM Administration TLV that message package contains are enabled state, the source OAM is enabled The alarm report function of entity.

The embodiment of the present invention is provided after a kind of system of OAM configurations, source PE30 configuration source OAM entities, passes through extension The OAM configuration informations of the source PE30 are sent to egress PE40 equipment by LSP Ping request messages, to cause the egress PE40 configures egress PE40 egress OAM entities according to the source OAM configuration informations, and start the egress OAM entities to The source PE30 sends OAM message；The LSP Ping request messages, which contain the egress PE40, to be needed to carry out OAM detections VPN marks, after the source PE30 and egress PE40 OAM entity configurations are good, the enable source OAM entities are to described Egress PE40 sends the function of OAM message, thus, completes source PE30 and egress PE40 OAM configuration works, source OAM Entity and egress OAM entities can enable corresponding alarm report function, and reducing two ends by above-mentioned implementation configures OAM's Configuration work amount, carry out the dynamic OAM that completes by interaction LSP Ping message due to two ends and configure, it is to avoid goes out in manual configuration Existing mistake.

The source PE30 and egress PE40 can be router or interchanger.

Alternatively, above-mentioned source PE30 processor 301 and egress PE40 processor 402 can be central processing unit (English full name is Central Processing Unit, and English abbreviation is CPU).Above-mentioned source PE30 receiver 303, hair Device 302, egress PE40 receiver 401, transmitter 403 is sent to include General Physics interface, the physical interface can be (English full name is Asynchronous Transfer Mode, English letter for ether (Ethernet) interface or asynchronous transfer mode Referred to as ATM) interface.Above-mentioned source PE30 receiver 303, processor 301 and transmitter 302 can be integrated into one or more Independent circuit or hardware, such as：(English full name is Application Specific Integrated to application specific integrated circuit Circuit, English abbreviation is ASIC), above-mentioned egress PE40 receiver 401, processor 402, transmitter 403 can be integrated into One or more independent circuits or hardware, such as：ASIC.

One of ordinary skill in the art will appreciate that：Realizing all or part of step of above method embodiment can pass through Programmed instruction related hardware is completed, and foregoing routine can be stored in a computer read/write memory medium, and the program exists During execution, the step of execution includes above method embodiment；And foregoing storage medium includes：Read-only storage (English full name For read-only memory, English abbreviation is ROM), RAM, magnetic disc or CD etc. are various can be with Jie of store program codes Matter.

Finally it should be noted that：Above example is only used to exemplary illustration technical scheme, rather than it is limited System；Although the beneficial effect that the present invention and the present invention are brought is described in detail with reference to the foregoing embodiments, this area Those of ordinary skill should be understood：It can still modify to the technical scheme described in foregoing embodiments, or right Which part technical characteristic carries out equivalent substitution；And these modifications or replacement, do not make the essence disengaging of appropriate technical solution The scope of the claims in the present invention.

Claims

1. a kind of method of Operations, Administration and Maintenance OAM configurations, it is characterised in that including：

Source provider edge router PE configures source OAM entities, and forbids the source OAM entities to be sent to egress PE OAM message；

The source PE sent to the egress PE carry the first label switched path of the source OAM entity configuration information because Special net bag survey meter LSP Ping request messages, to cause the egress PE according to the source OAM entity configuration information configurations The egress OAM entities of the egress PE, start the message receive capabilities of the egress OAM entities, and the first LSP Ping requests disappear Breath also including Layer3 Virtual Private Network L3VPN VPN identify, the VPN identify for identify the egress PE equipment need into The VPN of row OAM detections；

The source PE receives the first LSP Ping response messages that the egress PE is sent, and the first LSP Ping responses disappear Breath carries the egress OAM entity configuration information, when it is determined that the egress OAM entity configurations information and the source OAM entities When configuration information is matched, the function that the source OAM entities send OAM message to the egress PE is enabled；

The first LSP Ping request messages also include Virtual Private Network OAM forwarding equivalence class stack type, length, content VPN OAM FEC Stack TLV, the first LSP Ping request messages carry institute by the VPN OAM FEC Stack TLV VPN marks are stated, the VPN OAM FEC Stack TLV include：Target World Wide ID Target Global ID, destination node ID Target Node ID and target Route Distinguisher Target Route Distinguisher.

2. according to the method described in claim 1, it is characterised in that including：

When it is determined that the egress OAM entity configurations information is mismatched with the source OAM entity configurations information, the source is adjusted OAM entity configurations information and the egress OAM entity configuration information matches are held, the source OAM entities are enabled to the egress PE sends the function of OAM message.

3. according to the method described in claim 1, it is characterised in that the VPN OAM FEC Stack TLV also include：

Target interface ID Target IF ID, need to carry out the interface of OAM detections for identifying the egress PE；

Target ip address information, needs to carry out the route of OAM detections for identifying the egress PE.

4. according to the method described in claim 1, it is characterised in that

Also include OAM management types, length, content OAM Administration in the first LSP Ping request messages TLV, the OAM Administration TLV include：

5. method according to claim 4, it is characterised in that send the first LSP Ping to the egress PE and ask Before message, including：

The source PE configures the OAM message receive capabilities of source OAM entities, and sets the OAM Administration TLV two-way detection is masked as enabled state, is sent with the OAM message for causing the egress PE to configure the egress OAM entities Function, and start the function that the egress OAM entities send OAM message to the source PE；

The first LSP Ping request messages also include VPN OAM sources identity type, length, content VPN OAM Source Identifier TLV, the VPN OAM Source Identifier TLV need to carry out OAM for identifying the source PE The VPN marks of detection, wherein, the VPN OAM Source Identifier TLV include：

6. method according to claim 5, it is characterised in that the VPN OAM Source Identifier TLV are also Including：

Source IP address information, needs to carry out the route of OAM detections for identifying the source PE.

7. the method according to claim 4 to 6 any claim, it is characterised in that the first LSP Ping requests Alarm enabler flags in the OAM Administration TLV included in message are illegal state, to cause the egress PE After the egress OAM entities are configured, suppress the egress OAM entities alarm report function, the source OAM is enabled described Entity is sent to the egress PE after the function of OAM message, including：

The 2nd LSP Ping request messages are sent to the egress PE, the 2nd LSP Ping request messages include the OAM Alarm enabler flags in Administration TLV, the OAM Administration TLV are enabled state, so that The egress PE is obtained after the 2nd LSP Ping request messages are received, the alarm report of the egress OAM entities is enabled Function.

8. method according to claim 7, it is characterised in that including：

The 2nd LSP Ping response messages that the egress PE is sent are received, the 2nd LSP Ping response messages are to be directed to institute State the response message of the 2nd LSP Ping request messages；

When the alarm enabler flags for the OAM Administration TLV that the 2nd LSP Ping response messages are included are to make During energy state, the alarm report function of the source OAM entities is enabled.

9. a kind of method of Operations, Administration and Maintenance OAM configurations, it is characterised in that including：

The first label that egress provider edge router PE receives the carrying source OAM entity configuration information that source PE is sent is handed over Change path the Internet packets survey meter LSP Ping request messages；It is special that the first LSP Ping request messages also include L 3 virtual With net L3VPN VPN marks；

The egress PE configures egress OAM entities according to the first LSP Ping request messages, and it is real to configure the egress OAM Body identifies corresponding VPN to the VPN and detected, starts the message receive capabilities of the egress OAM entities；

The egress PE sends the first LSP Ping response messages to the source PE, and the first LSP Ping response messages are taken Configuration information with the egress OAM entities；

Also include OAM management types, length, content OAM Administration in the first LSP Ping request messages TLV, the OAM Administration TLV include：Enabler flags are alerted, for identifying whether to enable OAM alarm report work( Energy；Two-way detection mark, for identifying whether to set up the two-way OAM detections function between the source PE and egress PE；

When the two-way detection flag is enabled state, the egress PE configures the OAM message of the egress OAM entities Sending function, and start the function that the egress OAM entities send OAM message to the source PE.

10. method according to claim 9, it is characterised in that when the first LSP Ping request messages received In OAM Administration TLV in alarm enabler flags when being illegal state, the egress PE is configuring the place Hold after OAM entities, suppress the egress OAM entities alarm report function, methods described also includes：

The 2nd LSP Ping request messages that the source PE is sent are received, are included when in the 2nd LSP Ping request messages OAM Administration TLV alarm enabler flags be in enabled state, the alarm for enabling the egress OAM entities Report achievement energy.

11. method according to claim 10, it is characterised in that including：

The 2nd LSP Ping response messages are sent to the source PE, the 2nd LSP Ping response messages include OAM Administration TLV, as also included OAM Administration TLV in the first LSP Ping request messages In two-way detection when being masked as enabled state, OAM Administration TLV in the 2nd LSP Ping response messages Alarm enabler flags be enabled state, to cause the source PE after the 2nd LSP Ping response messages are received, to make The alarm report function of the energy source OAM entities.

12. a kind of source provider edge router PE, it is characterised in that including：

Operations, Administration and Maintenance OAM solid elements, for configuring source OAM entities, and forbid the source OAM entities to Egress PE sends OAM message；

Generation unit, the source OAM entities for being configured according to the OAM solid elements generate the first LSP Ping requests and disappeared Breath, the first LSP Ping request messages carry the source OAM entity configuration information, and the first LSP Ping requests disappear Breath also including Layer3 Virtual Private Network L3VPN VPN identify, the VPN identify for identify the egress PE equipment need into The VPN of row OAM detections；

Transmitting element, the first LSP Ping request messages for the generation unit to be generated are sent to egress PE, with So that the egress PE configures egress OAM entities according to the first LSP Ping request messages, start the egress OAM entities Message receive capabilities；

Receiving unit, for receiving the first LSP Ping response messages that the egress PE is sent, the first LSP Ping ring Message is answered to carry the egress OAM entity configuration information of the egress PE；

The OAM solid elements are additionally operable to when the determination egress OAM entity configurations information and the source OAM entity configurations are believed During breath matching, the function that the source OAM entities send OAM message to the egress PE is enabled；

The first LSP Ping request messages of the generation unit generation also include:

OAM management types, length, content OAM Administration TLV, for identifying the VPN marks；The OAM Administration TLV include：

Before the transmitting element sends the first LSP Ping request messages to the egress PE, the OAM entities list Member, is additionally operable to configure the OAM message receive capabilities of source OAM entities, and sets the OAM Administration TLV's The two-way detection is masked as enabled state, and work(is sent with the OAM message for causing the egress PE to configure the egress OAM entities Can, and start the function that the egress OAM entities send OAM message to the source PE.

13. source PE according to claim 12, it is characterised in that the OAM solid elements, is additionally operable to described when determining When egress OAM entity configurations information is mismatched with the source OAM entity configurations information, the source OAM entity configurations are adjusted Information and the egress OAM entity configuration information matches, enable the source OAM entities and send OAM message to the egress PE Function.

14. source PE according to claim 12, it is characterised in that the first LSP Ping of the generation unit generation please It is illegal state to seek the alarm enabler flags in the OAM Administration TLV in message, to cause the egress PE suppresses the egress OAM entities alarm report function after the egress OAM entities are configured；

After the OAM solid elements enable the function that the source OAM entities send OAM message to the egress PE, institute Generation unit is stated, is additionally operable to generate the 2nd LSP Ping request messages, the OAM that the 2nd LSP Ping request messages are included Alarm enabler flags in Administration TLV are enabled state；

The transmitting element, the 2nd LSP Ping request messages for being additionally operable to generate the generation unit are sent to described Egress PE；To cause the egress PE after the 2nd LSP Ping request messages are received, the egress OAM entities are enabled Alarm report function.

15. source PE according to claim 14, it is characterised in that including：

It is described to receive unit, it is additionally operable to receive the 2nd LSP Ping response messages that the egress PE is sent；

The OAM solid elements, the 2nd LSP Ping response messages for being additionally operable to receive when the receiving unit are included OAM Administration TLV alarm enabler flags when being enabled state, enable the alarm of the source OAM entities Reporting functions.

16. a kind of egress provider edge router PE, it is characterised in that including：

Receiving unit, for receive source PE transmission carrying source OAM entity configuration information the first label switched path because Special net bag survey meter LSP Ping request messages；The first LSP Ping request messages include Layer3 Virtual Private Network L3VPN VPN mark；

OAM solid elements, the first LSP Ping request messages for being received according to the receiving unit configure egress OAM entities, and configure the egress OAM entities corresponding VPN is identified to the VPN and detect, start the egress OAM realities The message receive capabilities of body；

Generation unit, for the egress OAM entities configured according to the OAM solid elements, generation the first LSP Ping responses disappear Breath, the first LSP Ping response messages carry the egress OAM entity configuration information；

Transmitting element, the first LSP Ping response messages for generation unit to be generated are sent to source PE；

The first LSP Ping request messages that the receiving unit is received also include OAM management types, length, content OAM Administration TLV, the OAM Administration TLV include：

The OAM solid elements, the two-way detection mark for being additionally operable to work as in the OAM Administration TLV is set When being set to enabled state, also configure the OAM message sending function of the egress OAM entities, and start the egress OAM entities to The source PE sends the function of OAM message.

17. egress PE according to claim 16, it is characterised in that

18. the egress PE according to claim 16 or 17, it is characterised in that

When the alarm enabler flags in the OAM Administration TLV that the receiving unit is received are illegal state When, the OAM solid elements suppress the egress OAM entities alarm report function after the egress OAM entities are configured；

The receiving unit, is additionally operable to receive in the 2nd LSP Ping request messages, the 2nd LSP Ping request messages and wraps It is to make containing the alarm enabler flags in the OAM Administration TLV, and the OAM Administration TLV Can state；

The OAM solid elements, the 2nd LSP Ping request messages for being additionally operable to be received according to the receiving unit are enabled The alarm report function of the egress OAM entities.

19. egress PE according to claim 18, it is characterised in that including：

The generation unit, is additionally operable to generate the 2nd LSP Ping response messages；Wherein, during two-way detection, the 2nd LSP The OAM Administration TLV included in Ping response messages alarm enabler flags are enabled state；

The transmitting element, is additionally operable to send the 2nd LSP Ping responses of the generation unit generation to the source PE Message；To cause the source PE after the 2nd LSP Ping response messages are received, the announcement of the source OAM entities is enabled Alert reporting functions.

20. a kind of OAM configures system, it is characterised in that including：

Source provider edge router PE described in claim 12 to 15 any claim, and claim 16 to 19 times Egress provider edge router PE described in one claim.